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In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.

In this online activity, learners build their own system of heavenly bodies and watch the gravitational ballet.

In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale.

In this activity, learners use mirrors to write secret messages to a friend. Use this activity to explore letters, optics, and/or symmetry.

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.

In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.

In this physical sciences activity, learners explore how passive solar design increases energy efficiency.

In this design challenge activity, learners use tubes of newspaper to make a table that’s at least eight inches tall and strong enough to hold a heavy book!

In this engineering activity, challenge learners to build a tower out of 10 sheets of newspaper and 3 feet of masking tape, which can hold a golf ball balancing at the top.

In this activity, learners explore how the application of nano-sized "whiskers" can protect clothing from stains.

This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

In this math activity, learners observe and sketch cracking patterns in pavement.

In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.

In this activity, participants will learn how stars form from the dust and gas that exists in space clumping together.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

In this game, learners try to find nano-related objects on a game board. Learners investigate the different ways nano is in the world around us.

In this optics activity, learners build a spy tool to secretly view things over walls or around corners.